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Flexible 3D motion estimation and tracking for multiview image sequence coding

SIGNAL PROCESSING-image COMMUNICATION 1998年第1-2期14卷 95-110页

作者： Kompatsiaris, I Tzovaras, D Strintzis, MG Aristotle Univ Thessaloniki Informat Proc Lab Dept Elect & Comp Engn Thessaloniki 54006 Greece

This paper describes a procedure for model-based coding of all channels of a multiview image sequence. The 3D model is initialised by accurate adaptation of a 2D wireframe model to the foreground object of one of the views. The rigid 3D motion is estimated for each triangle, and spatial homogeneity neighbourhood constraints are used to improve the reliability of the estimation efficiency and to smooth the motion held produced. A novel technique is used to estimate flexible motion of the nodes of the wireframe from the rigid 3D motion vectors of the wireframe triangles containing each node. Kalman filtering is used to track both rigid 3D motion of each triangle and flexible deformation of each node of the wireframe. The performance of the resulting 3D flexible motion estimation method is evaluated experimentally. (C) 1998 Elsevier Science B.V. All rights reserved.

关键词： multiview image sequence compression model-based coding non-rigid 3D motion estimation

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3D model based non-rigid motion estimation for multiview image sequences compression

3D model based non-rigid motion estimation for multiview ima...

引用

Visual Communications and image Processing 1998 Conference

作者： Kompatsiaris, I Tzovaras, D Strintzis, MG Aristotelian Univ Salonika Dept Elect & Comp Engn Informat Proc Lab GR-54006 Salonika Greece

ISBN: (纸本)0819427497

This paper describes a procedure for model-based coding of dl channels of a multiview image sequence. The 3D model is initialized by accurate adaptation of a 2D wireframe model to the foreground object of one of the views. The rigid 3D motion is estimated for each triangle, and spatial homogeneity neighbourhood constraints are used to improve the reliability of the estimation efficiency and to smooth the motion field produced. A novel technique is used to estimate flexible motion of the nodes of the wireframe from the rigid 3D motion vectors of the wireframe triangles containing each node. Kalman filtering is used to track both rigid 3D motion of each triangle and flexible deformation of each node of the wireframe. The performance of the resulting 3D flexible motion estimation method is evaluated experimentally.

关键词： multiview image sequence compression model-based coding non-rigid 3D motion estimation

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